Current Limitation
The existing adset_targeting (“Ad Set Targeting Spec”) field only returns targeting info for an individual ad set — i.e., which audience (if any) is already attached to that ad set. It does not expose the broader set of audiences available at the account level. Additionally, when an ad set uses Advantage+ automatic targeting rather than a saved audience, this field returns no audience data at all.
Requested Functionality
Audience discovery (read): A supported field, connector, or account-scoping method that returns all Meta custom, saved, and lookalike audiences belonging to a given ad account — independent of whether each audience is currently in use by any ad set.
Audience assignment (write): A supported method for applying a selected audience (from the list above) to an ad set’s targeting configuration when creating or updating that ad set.
Use Case / Workflow
Retrieve the list of audiences available on a connected Meta ad account.
Display that list to the end user in-app.
Let the user select an audience from the list.
Apply the selected audience to an ad set’s targeting spec on create/update.